Bubble-Head Charm

One of the many reasons wizards happen to look cooler than Muggles? The pointy hats, of course — that goes without saying — but what about their ability to play extreme sports without extremely dorky safety equipment? The Bubble-Head Charm provides the caster with a nice, airtight chamber of oxygen so they can breathe underwater and thus avoid scuba gear or really unpleasant smells. (It’s used in Harry Potter and the Goblet of Fire by Cedric Diggory and Fleur Delacour during the Triwizard Tournament.)